in
Move to the incoming adjacent vertices, given the edge labels.
Synopsis
in( [edgeLabel] )| Syntax conventions | Description |
|---|---|
| Lowercase and uppercase | Literal keyword. Includes (). |
Italics |
Variable value. Replace with a user-defined value. |
[] |
Optional. Square brackets ( [] ) surround
optional command arguments. Do not type the square brackets. |
{} |
Group. Braces ( {} ) identify a group to choose
from. Do not type the braces. |
| |
Or. A vertical bar ( | ) separates alternative
elements. Type any one of the elements. Do not type the vertical
bar. |
... |
Repeatable. An ellipsis ( ... ) indicates that
you can repeat the syntax element as often as required. |
Description
The in() step moves the traversal to the incoming adjacent vertices, given
the edge labels. Specifying no edge label will traverse all incident edges.
Examples
Get all incoming adjacent vertices for all the vertices in the
graph:
g.V().in().valueMap()Get all incoming adjacent vertices for all the vertices with incident edges
knows:
g.V().in('knows).valueMap()